Elcometer 122 Testex® Replica Tape is available in four profile ranges. It is important that the tape grade chosen is reflective of the profile being measured.
For profiles between 38 & 115µm (1.5 & 4.5mils): X-Coarse Tape
Elcometer 122 Testex® Tape consists of foam with a non-compressible backing. The foam side is rubbed into the surface providing a permanent mould of the peak-to-valley profile. The profile of the surface can then be measured using the Elcometer 124 Thickness Gauge.
Elcometer 122 Testex® Replica Tape is available in four profile ranges. It is important that the tape grade chosen is reflective of the profile being measured.
For profiles between 38 & 115µm (1.5 & 4.5mils): X-Coarse Tape
There are 50 tests in each Replica Tape roll.
How to take a reading using the Testex® Replica Tape
Tear off one section of the tape from the roll, peel off the backing tape and retain the back if required for future use.
Stick the tape on to the test surface, and rub the central portion using the swizzle stick provided, or the end of a pen, pencil or similar rounded object until dark spots appear. This gives a surface replica.
Using a micrometer such as the Elcometer 124 Thickness Gauge, measure the thickness of the central portion of the tape replica and subtract 50µm (2mils) from the reading. This result is the peak-to-valley profile height. Write the value on the tape.
If the value falls within the purple band on the coarse tape (38-64µm) then repeat the test as shown in step 2 using the extra coarse tape and then average the two values.
If the tape is required for future reference, replace the backing tape to preserve the imprinted profile.
